The yellow, black, and white seems very elegant and more "formal" than a beach type destination wedding. I love the pinks and oranges against the blue!! All bright colors, even incorporating in with the black and white will look great!

Honestly I think that you can do whatever you want BUT (and I might be biased here because I really don't like yellow personally) yellow, black and white together don't scream DW to me. I think that if you really wanted yellow I would add another bright tropical colour.